History reverberates with examples of deliberate attempts to dehumanise and divide people and it has never ended well. So, why do governments use fear? Simply, it encourages compliance. A meta-analysis has found that messages with fear are nearly twice as effective as messages without fear.21 At a time when there is political disengagement, fear cuts through. How do you get your population to take heed? Scare them. Fear suppresses rational thinking and they are more likely to do what they are told.